Contents

Circumflex on Lithuanian õ indicates a Proto-Indo-European long vowel (i.e. a lengthened grade) as the origin, as opposed to the short *e or *o with followed by a laryngeal.

According to the usual doctrine[1], the initial form was *h₁ōd, ablative singular of the PIE demonstrative pronoun *éy, h₁e. However, that demonstrative has no such ablative singular attested in any of the daughter languages, so that hypothesis remains unprovable.

The same PIE proto-form could have also yielded Sanskrit आत् ‎(ā́t, “so, then, afterwards”) and Avestan 𐬁𐬀𐬝 ‎(āat̰) ("afterwards, then").